Abstract: The disclosure relates to an apparatus and associated methodology for processing flows. Data packets belonging to various flows are received by a device of a communications network and stored in a queue so as the device retransmits them. In order to re-transmit a data packet, a flow is selected, to which the least memory space in the queue is allocated. A packet from the selected flow is retransmitted and extracted from the queue, and when the memory space available in the queue does not allow a received packet to be stored. Further a flow is selected to which the most memory space in the queue is allocated and a data packet of the selected flow is eliminated from the queue.